TY  - BOOK
AU  - Singh, D L
AU  - Chopra, K L
AU  - Seghal, N K
TI  - Introdcution to modern physics
SN  - 8122414087
U1  - 539.21 
PY  - 1985///
CY  - New Delhi
PB  - Sulthan Chand & Sons
KW  - Physics
ER  -